cosponsor
noun
co·spon·sor
(ˌ)kō-ˈspän(t)-sər 
variants
or co-sponsor
plural cosponsors or co-sponsors
: a joint sponsor
The senator was a cosponsor for both bills.
Michigan Tech Student Relay For Life is a participating cosponsor of this event.—
The Daily Mining Gazette
The Daily Mining Gazette
cosponsor
transitive verb
or co-sponsor
cosponsored or co-sponsored; cosponsoring or co-sponsoring
This year Simpson is carrying on the legislative struggle without Mazzoli, who has declined to cosponsor the bill without support from the Democratic House leadership …
—George Russell
George Russell
The following summer, Bingham returned to Machu Picchu with an expedition co-sponsored by the National Geographic Society.
—Duane Damon
Duane Damon
cosponsorship
noun
or co-sponsorship
Increasingly, large urban malls are being built with the co-sponsorship of city governments.
—Witold Rybczynski
Witold Rybczynski
Examples of cosponsor in a Sentence
Recent Examples on the Web
Proposals to repeal the commercial clean vehicle credit entirely have also been introduced and appear to have a roughly similar level of support, judging by the number of cosponsors.
—Marie Sapirie, Forbes.com, 28 Apr. 2025
Luna, a cosponsor of the bill, moved to bypass leadership and launched a discharge petition, a procedural move that allows a measure to move forward without the speaker's approval, to force a vote on it.
—Caitlin Yilek, CBS News, 7 Apr. 2025
For instance, in the 118th Congress, Rep. John Rose (R-TN) introduced (with three cosponsors) the Bank Privacy Reform Act, a bill that would reaffirm Americans’ Fourth Amendment protections.
—Norbert Michel, Forbes, 11 Mar. 2025
Only one Democrat, Representative Jan Schakowsky of Illinois, remained a cosponsor on the articles of impeachment as of Wednesday afternoon.
—Andrew Stanton, MSNBC Newsweek, 30 Apr. 2025
See All Example Sentences for cosponsor
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Marie Sapirie, Forbes.com, 28 Apr. 2025
Luna, a cosponsor of the bill, moved to bypass leadership and launched a discharge petition, a procedural move that allows a measure to move forward without the speaker's approval, to force a vote on it.
—Caitlin Yilek, CBS News, 7 Apr. 2025
For instance, in the 118th Congress, Rep. John Rose (R-TN) introduced (with three cosponsors) the Bank Privacy Reform Act, a bill that would reaffirm Americans’ Fourth Amendment protections.
—Norbert Michel, Forbes, 11 Mar. 2025
Only one Democrat, Representative Jan Schakowsky of Illinois, remained a cosponsor on the articles of impeachment as of Wednesday afternoon.
—Andrew Stanton, MSNBC Newsweek, 30 Apr. 2025
See All Example Sentences for cosponsor
Cite this Entry
“Cosponsor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cosponsor. Accessed 7 Jun. 2025.
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